Shangri La is the best zombie map since Der Riese. The shrink ray gun is just as good as the wunderwaffe, they brought monkey bombs back, and the two new zombie types are awesome (no annoying director like in call of the dead...). I think this one map alone is worth $10-15 and anyone who has Black Ops should get it.

There's nothing quite like grouping 30 zombies together with a monkey bomb, shrinking them all, then running at them to kick them like a football.